A.has begun
B.takes place
C.occurs
D.happens
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A.the cylinder head
B.the cross-head
C.the moving piston
D.the stationary piston
A.tank table
B.trim
C.water contents
D.oil pressure
A.alternator
B.turbo-charger
C.remote controller
D.windlass
A.suction
B.compression
C.expansion
D.exhaust
A.in order to
B.because of
C.so that
D.so as to
A.play a great part on
B.run a role in
C.plays an important part in
D.acts as important part at
A.an oil seal
B.removing heat
C.a gas seal
D.cooling the piston
A.ignition ratio
B.power ratio
C.compression ratio
D.injection ratio
A.nip
B.nap
C.gap
D.lip
A.less than
B.lighter than
C.larger than
D.smaller than
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最新试题
Proper filtering and straining of fuel oil is important because the ().
The function of diesel engine piston compression rings is to ().
The minimum speed an engine must attain before ignition can occur depends upon ().
To determine if the lube oil filter elements need changing, ().
A diesel engine piston ring face is in direct contact with the ().
Routine monitoring of a diesel engine should include ().
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting ().
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?()
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?()
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the ().